CN113217169A

CN113217169A - Assembly of a cooling system with a heat exchanger, a control valve and a regulating device

Info

Publication number: CN113217169A
Application number: CN202110152652.7A
Authority: CN
Inventors: O·霍特托夫; M·冯豪森; J·巴德尔
Original assignee: Volkswagen AG
Current assignee: Volkswagen AG
Priority date: 2020-02-04
Filing date: 2021-02-04
Publication date: 2021-08-06
Anticipated expiration: 2041-02-04
Also published as: CN113217169B; DE102020201350A1

Abstract

The invention relates to an assembly (12) for a cooling system (1) of a motor vehicle, comprising a heat exchanger (13), a control valve (16) and a regulating device (18). The assembly (12) is characterized in that: -a first and a second coupling socket (24, 25) which are connected in a fluid-conducting manner to a first heat exchange side of the heat exchanger (13), and-a third coupling socket (26) which is connected in a fluid-conducting manner to a second heat exchange side of the heat exchanger (13), and-a connecting line (22) which connects the second heat exchange side of the heat exchanger (13) in a fluid-conducting manner to a first control opening (23) of the control valve (16).

Description

Assembly of a cooling system with a heat exchanger, a control valve and a regulating device

Technical Field

The invention relates to a component (or called structural assembly, Baugruppe) for a cooling system of a motor vehicle, with a heat exchanger, a control valve and a regulating device. The invention further relates to a cooling system having such a component and to a motor vehicle having a corresponding cooling system.

Background

The cooling system according to the invention may in particular comprise: a high-temperature sub-system in which a coolant can be circulated, i.e. for which a relatively high coolant operating temperature is at least at times provided; and a low-temperature sub-system in which a coolant can be circulated, i.e. for which a coolant operating temperature that is relatively low compared to the coolant of the high-temperature sub-system is at least at times provided.

The "high temperature" is hereinafter also referred to simply as HT and the "low temperature" as NT.

Such a cooling system is known, for example, from WO2008/080872a 1. In this cooling system, the internal combustion engine, the HT coolant cooler, the continuous braking device ("retarder"), and the HT coolant pump are integrated into the HT subsystem. The NT subsystem includes a charge air cooler, an NT coolant cooler, and an NT coolant pump. By means of the control valve, the HT subsystem and the NT subsystem can be fluidly coupled as required in order to make it possible to heat the charge air cooler by means of the relatively hot coolant from the HT subsystem.

Disclosure of Invention

The object of the invention is to couple HT subsystems and NT subsystems in a cooling system comprising said subsystems in an advantageous manner such that heat transfer is possible on demand between the coolant flowing in the HT subsystems and the coolant flowing in the NT subsystems.

This object is achieved by means of a cooling system according to claim 8. An assembly which advantageously makes possible coupling between subsystems of such a cooling system is the object of patent claim 1. Advantageous embodiments of the assembly according to the invention and of the cooling system according to the invention are the subject matter of further patent claims and/or are derived from the following description of the invention.

According to the invention, an assembly for a cooling system of a motor vehicle is provided, which comprises at least one heat exchanger, a control valve and a regulating device. Further, the assembly includes:

a first and a second connection stub, which are connected in a fluid-conducting manner to a first heat exchange side of the heat exchanger,

a third connection piece which is connected in a fluid-conducting manner to the second heat exchange side of the heat exchanger, and

a connection line which connects the second heat exchange side of the heat exchanger in a pilot fluid manner with the first control opening of the control valve.

In this context, objects which are joined together (or which are joined to one another, i.e. zusammenh ä ngender) and can be manipulated as a unit are understood as "components", which at least comprise the components mentioned. In this case, it can be provided that all of the associated components are rigidly connected to one another.

The assembly according to the invention advantageously makes it possible, in particular in a well-manageable and thus advantageously assemblable manner and with a relatively small installation space requirement, to: the coupling is effected between the HT subsystem (which may also preferably be integrated into the internal combustion engine) and the NT subsystem of the cooling system according to the invention, wherein heat transfer is possible between the HT coolant flowing in the HT subsystem and the NT coolant flowing in the NT subsystem by means of the heat exchangers of the assembly, without exchange or mixing of the different coolants of the subsystems taking place here.

According to a preferred embodiment of the assembly according to the invention, the assembly can furthermore comprise:

a fourth connection stub which is connected in a fluid-conducting manner to a second control opening of the control valve, and

a fifth connection stub which is connected in a fluid-conducting manner to a third control opening of the control valve,

wherein the control valve by means of the regulating device at least:

can be brought into a first valve position in which fluid flow from the second control opening into the third control opening is released and fluid flow through the first control opening is prevented; and is

Can be placed in a second valve position in which fluid flow from the first control opening to the third control opening is released and fluid flow through the second control opening is prevented.

In this way, an advantageous throughflow of the cooling system can be achieved by means of a relatively low number of valve positions, and in particular by means of only the two valve positions. Additional intermediate valve positions may also be advantageously provided.

According to a preferred embodiment of the assembly according to the invention, the assembly may comprise a bypass line which connects the third connection piece in a fluid-conducting manner to the fourth control opening of the control valve. According to an advantageous development of the assembly according to the invention, it can also be provided that the control valve can furthermore be brought by means of the regulating device into a third valve position, in which fluid flow from the fourth control opening to the third control opening is released and fluid flow through the first control opening and preferably also through the second control opening is prevented. This makes it possible to: heat transfer between the coolant of the HT subsystem and the coolant of the NT subsystem is provided only on demand, i.e. by means of a bypass, can be prevented: with the aid of NT coolant flow-through heat exchangers. According to a further preferred development of the assembly according to the invention with a bypass line, it can be provided that the fluid flow through the fourth control opening is also blocked in the first valve position and/or in the second valve position of the control valve. In this way, an advantageous control of the coolant flow in a corresponding cooling system according to the invention can also be achieved by means of the assembly.

According to a preferred embodiment of the cooling system according to the invention, which likewise makes possible an advantageous control of the coolant flow in the cooling system, it can be provided that the first and second connection socket are integrated into the HT subsystem and at least the third connection socket, preferably also the fourth and fifth connection socket (if provided), are integrated into the NT subsystem. In this case, provision can then be made, in particular, for:

a first coupling nozzle is arranged (preferably directly) downstream of the AGR cooler integrated into the HT subsystem and/or

The second coupling line is arranged (preferably directly) upstream of the HT coolant pump integrated into the HT subsystem and/or

A third connection pipe (preferably directly) is arranged downstream of the NT coolant pump integrated into the NT subsystem and/or

A fourth connection pipe is arranged (preferably directly) downstream of the NT coolant cooler integrated into the NT subsystem and/or

A fifth connecting pipe is arranged (preferably directly) upstream of the charge air cooler integrated into the NT sub-system.

Such a heat exchanger is understood according to the invention as a "coolant cooler": in this heat exchanger, heat transfer of the coolant to the ambient air can be achieved with the coolant being cooled for a primary or sole purpose.

It can be provided that the assembly according to the invention has a main housing which accommodates the heat exchanger and/or the control valve and/or the regulating device, preferably all of these components, if possible in multiple parts, which ensures structural integration or structural union of these components. In this case, it can furthermore be provided that the main housing (in one piece) forms the first and/or second and/or third and/or fourth (if present) and/or fifth (if present) and/or the connecting and/or bypass line (if present), particularly preferably the entirety of the provided fluid-conducting elements. This makes possible as simple and fast an assembly of the assembly as possible compared to separately constructing these fluid-conducting elements, since separate connections of the fluid-conducting elements with other elements/components of the assembly can be dispensed with.

According to one embodiment of the assembly according to the invention, it can be provided that the heat exchanger and/or the control valve and/or the regulating device (respectively) have separate housings (or so-called single housing, Einzelgeh ä use), wherein one or more of the separate housings are connected to one another and/or (in particular directly) to the overall housing (if present). This can have advantages in terms of the manufacture of the components and also in terms of the assembly of the components. Alternatively, however, the overall housing can also be used as a housing for the heat exchanger core, that is to say for all elements of the heat exchanger which can be traversed by different fluids/coolants and are in contact with one another for heat exchange. The overall housing can likewise form a control space of the control valve, in which a valve body is arranged which is adjustable, that is to say in particular movable and/or rotatable, by means of the adjusting device. The overall housing can furthermore be used to accommodate a drive element of the adjusting device, in particular an electric servomotor, and, if appropriate, a gear mechanism, in a supporting manner.

The invention also relates to a motor vehicle, in particular a wheel-based and non-rail motor vehicle (preferably PKW or LKW), having a cooling system according to the invention. The internal combustion engine, which is preferably provided and then integrated into the HT subsystem of the cooling system, can in particular be provided for providing (directly or indirectly) driving power for the motor vehicle.

Drawings

The invention is explained in detail below with the aid of design examples shown in the drawings. In the drawings:

FIG. 1 shows a cooling system according to the present invention;

fig. 2 shows an assembly according to the invention in a view from the front; and is

Fig. 3 shows the assembly in a view from the rear.

Detailed Description

Fig. 1 shows a cooling system 1 for a motor vehicle according to the invention. The cooling system comprises an HT subsystem 2 and an NT subsystem 3, in which coolant can be delivered by means of at least one coolant pump 4, respectively. The

subsystems

2,3 of the cooling system 1 are in this case fluidically separated from one another, i.e. it is provided that the HT coolant flowing in the HT subsystem 2 and the NT coolant flowing in the NT subsystem 3 do not (and sometimes do not) mix as a result of the respective coupling of the cooling circuits of the two

subsystems

2, 3. This does not however exclude: the two

subsystems

2,3 are fluidically connected to a common compensation vessel (sometimes referred to as a balancing vessel, namely Ausgleichsbeh ä filter) (not shown) of the cooling system 1.

In addition to the first HT coolant pump 4, which can be driven by an electric motor, integrated into the HT subsystem 2 is a heating heat exchanger 7, that is to say a heat exchanger: by means of which ambient air provided for regulating the temperature of the interior of the motor vehicle can be heated as required. Furthermore, the HT subsystem 2 comprises an AGR cooler 8, that is to say a heat exchanger: by means of which the exhaust gases which are fed back on demand from the exhaust system (not shown) of the internal combustion engine 9 into the fresh gas system (not shown) can be cooled. The internal combustion engine 9, and in particular the block head (or cylinder head, or zyinderkopf) 10 and the crankcase 11 of the internal combustion engine 9, are also integrated into the HT subsystem 2. This also applies to the second HT coolant pump 5, which may be mechanically, that is to say driven by the combustion engine 9, and to the first heat exchange side of the heat exchanger 13 of the assembly 12 according to the invention and to the coolant distribution module 14. By means of the coolant distribution module 14, a desired distribution of the HT coolant can be achieved in order to flow through such components of the HT subsystem 2 having a temperature regulation function, that is to say the internal combustion engine 9, the heating heat exchanger 7, the AGR cooler 8 and the heat exchanger 13 of the assembly 12.

Furthermore, the HT subsystem 2 may also have additional components, not shown, in particular also such components with temperature regulation, such as for example HT coolant coolers.

Integrated into the NT subsystem 3, in addition to the NT coolant pump 6, are a NT coolant cooler 15, a second heat exchange side of the heat exchanger 13 of the assembly 12, a control valve 16 of the assembly 12 and a charge air cooler 17. The fresh gas supplied to the internal combustion engine 9 via the fresh gas system can be cooled as required by means of the charge air cooler 17 and compressed by means of a compressor integrated into the fresh gas system.

A more detailed illustration of the assembly 12 according to the invention, which assembly can be applied in the cooling system 1 according to fig. 1, is shown in fig. 2 and 3. According to this embodiment, each of the components of the assembly 12, that is to say the heat exchanger 13, the control valve 16 and the electric servomotor (not visible) based adjusting device 18 provided for adjusting the control valve 16, respectively, comprises a

separate housing

19,20,21, wherein the

separate housings

19,20,21 are rigidly connected to one another. In this case, a direct connection is provided between the separate housing 21 of the regulating device 18 and the separate housing 20 of the control valve 16, while the separate housing 20 of the control valve 16 is indirectly connected to the separate housing 19 of the heat exchanger 13 via a connecting line 22 of the assembly 12, which is designed as a rigid line. The connection line 22 connects the second heat exchange side of the heat exchanger 13 in a pilot fluid manner with a first control opening 23 of the control valve 16.

The separate housing 19 of the heat exchanger 13 forms a first and a

second coupling stub

24,25, by means of which the first heat exchange side of the heat exchanger 13 can be integrated into the HT subsystem 2 of the cooling system 1 according to fig. 1, for example. In the cooling system 1 according to fig. 1, a first coupling stub 24 is arranged directly downstream of the AGR cooler 8 and a second coupling stub 25 is arranged upstream of the two HT coolant pumps 4, 5. The first heat exchange side of the heat exchanger 13 is thus integrated into the HT subsystem 2 between the AGR cooler 8 and the HT coolant pumps 4,5 on the one hand, in such a way that the HT coolant delivered by at least one of the HT coolant pumps 4,5 first flows through the AGR cooler 8 and only then through the first heat exchange side of the heat exchanger 13. Thus, for the HT coolant in the respective cooling circuit of the HT subsystem 2, the first coupling connection 24 is an inlet connection for the first heat exchange side of the heat exchanger 13 and the second coupling connection 25 is an outlet connection for the first heat exchange side of the heat exchanger 13, with respect to the provided flow direction which is obtainable by operating at least one of the HT coolant pumps 4,5 accordingly.

Furthermore, the separate housing 19 of the heat exchanger 13 of the assembly 12 forms a third connection 26, which in the cooling system 1 according to fig. 1 is arranged directly downstream of the NT coolant pump 6.

The separate housing 20 of the control valve 16 forms a fourth connection stub 27, which is connected in a flow-conducting manner to the second control opening 28 of the control valve 16 and which is integrated into the NT subsystem 3 in the cooling system 1 according to fig. 1 directly downstream of the NT coolant cooler 15. Furthermore, the separate housing 20 of the control valve 16 forms a fifth connection 29, which is connected in a fluid-conducting manner to a third control opening 30 of the control valve 16 and which is arranged upstream of the charge air cooler 17.

Depending on the valve position of the control valve 16, which is adjusted by means of the adjusting device 18, the NT coolant delivered by means of the NT coolant pump 6 may be first conducted through the NT coolant cooler 15 and/or the second heat exchange side of the heat exchanger 13 and/or through the bypass line 31 and subsequently through the charge air cooler 17. Correspondingly, the third connection 26 is an inlet connection for the second heat exchange side of the heat exchanger 13 and for the bypass line 31, and the second control opening 28, which is connected in a fluid-conducting manner to the fourth connection 27, is the first inlet of the control valve 16. The second inlet of the control valve 16 is formed by a first control opening 23 which is connected in a fluid-conducting manner to the connection line 22. The connection line 22 is also connected to the outlet of the heat exchanger 13 on the second heat exchange side. The fourth control opening 32 of the control valve 16, which is connected in a pilot-flow manner to the bypass line 31, is a third inlet of the control valve 16. And the third control opening 30, which is connected in a fluid-conducting manner to the fifth connecting line 29, is the outlet of the control valve 16.

The control valve 16 can be brought into a first valve position by means of the regulating device 18, in which the flow of NT coolant from the second control opening 28 into the third control opening 30 is released and the flow of NT coolant through the first control opening 23 and also the fourth control opening 32 is prevented. The NT coolant delivered by the NT coolant pump 6 is thus delivered in a circuit which additionally comprises only the NT coolant cooler 15 and the charge air cooler 17.

Furthermore, the control valve 16 may be brought into a second valve position by means of the regulating device 18, in which the flow of NT coolant from the first control opening 23 into the third control opening 30 is released and the flow of NT coolant through the second control opening 28 and also the fourth control opening 32 is blocked. The NT coolant delivered by the NT coolant pump 6 is thus delivered in a circuit which additionally comprises only the second heat exchange side of the heat exchanger 13 and the charge air cooler 17.

And finally the control valve 16 may be brought into a third valve position by means of the regulating device 18, in which the flow of NT coolant from the fourth control opening 32 to the third control opening 30 is released and the flow of NT coolant through the first and

second control openings

23, 28 is blocked. The NT coolant delivered by the NT coolant pump 6 is thus delivered in a circuit which additionally comprises only the bypass line 31 and the charge air cooler 17.

In principle, any number of intermediate positions may be provided between the first and second valve positions and/or between the second and third valve positions and/or between the first and third valve positions, so that also any distribution of coolant for simultaneous flow through the NT coolant cooler 15 and/or the heat exchanger 13 and/or the bypass 31 is possible.

The

coupling sockets

24,25,26,27,29 of the assembly 12 shown in fig. 2 and 3 are designed as simple plug-in sockets onto which the hose lines of the cooling system according to fig. 1, for example, can be plugged in each case. For a reliable connection between the connector and the hose line, a fastening by means of a simple hose clamp or spring clamp, respectively, can also be provided.

According to an alternative embodiment of the cooling system according to fig. 1 and of the assemblies according to fig. 2 and 3, it can be provided that the bypass line 31 is not provided. Accordingly, the control valve 16 of the assembly 12 does not have the fourth control opening 32 and is also not adjustable into the third valve position. In this cooling system 1, the following possibilities are thereby eliminated: the coolant is conveyed by means of the NT coolant pump 6 in a circuit comprising only the charge air cooler 17 as a component with a temperature regulation function.

According to a further alternative embodiment of the assembly according to fig. 2 and 3, it can be provided that the positioning of the first and

third connection stub

24,26 is exchanged without any change in the connection of the connection stubs 24,26 to the components of the cooling system according to fig. 1. Thereby, an advantageous diagonal or cross-flow of the heat exchanger 13 can be achieved in terms of heat transfer efficiency by means of HT coolant and NT coolant.

List of reference numerals

1 Cooling System

HT subsystem of 2 cooling system

NT subsystem of cooling system

4 first HT Coolant Pump

5 second HT Coolant Pump

6 NT coolant pump

7 heating type heat exchanger

8 AGR cooler

9 internal combustion engine

10 cylinder head of internal combustion engine

11 crankcase of internal combustion engine

12 assembly

13 heat exchanger of assembly

14 Coolant distribution module

15 NT coolant cooler

16-component control valve

17 charge air cooler

18 adjustment device

19 independent shell of heat exchanger

20 independent housing of control valve

21 independent housing of an adjusting device

22 assembly connection line

23 first control opening of the control valve

24 first coupling socket of assembly

25 second connection pipe of assembly

26 third coupling tube of module

27 fourth connecting stub of a module

28 second control opening of the control valve

29 fifth connecting pipe of assembly

30 third control opening of the control valve

31 bypass line

32 control the fourth control opening of the valve.

Claims

1. An assembly (12) for a cooling system (1) of a motor vehicle with a heat exchanger (13), a control valve (16) and a regulating device (18), characterized in that:

-a first and a second coupling connection (24, 25) which are connected in a fluid-conducting manner to a first heat exchange side of the heat exchanger (13), and

-a third connection (26) which is connected in a fluid-conducting manner to the second heat exchange side of the heat exchanger (13), and

-a connection line (22) connecting the second heat exchange side of the heat exchanger (13) in a pilot fluid manner with a first control opening (23) of the control valve (16).

2. The assembly (12) of claim 1, wherein:

-a fourth connection stub (27) which is connected in a fluid-conducting manner with a second control opening (28) of the control valve (16), and

a fifth connection (29) which is connected in a fluid-conducting manner to a third control opening (30) of the control valve (16),

wherein the control valve (16) is adjusted by means of the adjusting device (18)

-is placeable into a first valve position in which fluid flow from the second control opening (28) into the third control opening (30) is released and fluid flow through the first control opening (23) is prevented; and is

-is placeable into a second valve position in which fluid flow from the first control opening (23) into the third control opening (30) is released and fluid flow through the second control opening (28) is prevented.

3. Assembly (12) according to claim 1 or 2, characterized by a bypass line (31) which connects the third connection pipe (26) in a fluid-conducting manner with a fourth control opening (32) of the control valve (16).

4. An assembly (12) according to claim 2 and claim 3, characterized in that the control valve (16) can be brought into a third valve position by means of the regulating device (18), in which third valve position fluid flow from the fourth control opening (32) into the third control opening (30) is released and fluid flow through the first control opening (23) is prevented.

5. Assembly (12) according to any one of the preceding claims, characterized by a main housing accommodating the heat exchanger (13) and/or the control valve (16) and/or the regulating device (18).

6. Assembly (12) according to claim 5, characterized in that the main housing configures the first and/or second and/or third and/or fourth coupling nipple (24, 25,26,27, 29) and/or the connection line (22) and/or the bypass line (31).

7. Assembly (12) according to any one of the preceding claims, characterized in that the heat exchanger (13) and/or the control valve (16) and/or the regulating device (18) have individual housings (19;20;21), wherein one or more of the individual housings (19;20;21) are connected to each other and/or to the overall housing.

8. A cooling system (1) for a motor vehicle with a high-temperature subsystem (2) and a low-temperature subsystem (3), characterized by an assembly (12) according to one of the preceding claims, wherein the first and second coupling nipples (24, 25) are integrated into the high-temperature subsystem (2) and at least the third coupling nipple (26) is integrated into the low-temperature subsystem (3).

9. The cooling system (1) according to claim 8, characterized in that:

-arranging the first coupling nozzle (24) downstream of an AGR cooler (8) integrated into the high temperature subsystem (2) and/or

-arranging the second coupling pipe (25) upstream of a high temperature coolant pump (4,5) integrated into the high temperature subsystem (2) and/or

-arranging the third connection pipe (26) downstream of a cryogenic coolant pump (6) integrated into the cryogenic subsystem (3).

10. The cooling system (1) according to claim 9, characterized in that:

-the fourth connecting pipe (27) is integrated into the cryogenic subsystem (3) downstream of the cryogenic coolant cooler (15) and/or

-the fifth connection pipe (29) is integrated into the cryogenic subsystem (3) upstream of a charge air cooler (17).